The verdict in three sentences
A custom BI dashboard is an investment of 12,000 to 45,000 EUR excl. VAT in 2026, depending on the number of sources and the granularity of indicators. Delivered in 2 to 4 months, it unifies ERP, CRM and accounting into a single, reliable view. For a leader, the real gain is not the report but the decision speed it unlocks.
Price and cost items in 2026
The budget varies with the number of connectors, calculation complexity (margins, forecasting, cohorts) and design level. Here are the 2026 ranges for a project in France.
| Level | Connected sources | Indicators | Cost (EUR excl. VAT) | Timeline |
|---|---|---|---|---|
| Simple steering | 1 - 2 | 10 - 15 | 12,000 - 18,000 | 6 - 8 weeks |
| Decision-grade | 3 - 4 | 20 - 35 | 20,000 - 32,000 | 2 - 3 months |
| Advanced/forecast | 5 + | 40 + | 32,000 - 45,000 | 3 - 4 months |
| Multi-entity group | 6 + | Bespoke | 45,000 + | 4 months + |
Detailed budget breakdown
Knowing where the money goes helps arbitrate scope. Here is a typical breakdown for a 28,000 EUR project.
| Item | Share | Amount (EUR excl. VAT) | Content |
|---|---|---|---|
| Source connection | 30 % | 8,400 | ERP, CRM, accounting, bank APIs |
| Data modelling | 25 % | 7,000 | Cleaning, business rules |
| Interface/UX | 20 % | 5,600 | Screens, filters, mobile |
| Development | 15 % | 4,200 | Calculations, alerts |
| Testing + training | 10 % | 2,800 | QA, onboarding |
The maintenance and evolution subscription then sits between 200 and 600 EUR/month.
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Mini case study
Thomas, head of a trading SME (52 staff, 9 M EUR revenue), used to steer via monthly Excel exports available with a 10-day lag. After a 26,000 EUR excl. VAT project delivered in 3 months, he now views margins, stock and cash in real time. A pricing adjustment made 8 days earlier than before preserved around 35,000 EUR of margin in one quarter. The dashboard paid for itself in less than a fiscal year.
FAQ
Why not use a standard BI tool like Power BI? It works for simple needs, but a custom project handles specific business rules, non-standard sources and a UX tailored to your teams. We often combine both: a Power BI base plus custom development.
How many sources can be connected? Technically there is no limit. In practice we start with 2 to 4 key sources (ERP, CRM, accounting) then extend in iterations to control the budget.
Is the data updated in real time? Depending on the source: refresh every 5 to 15 minutes for modern APIs, or several times a day for older systems. Frequency is defined per indicator.
Who maintains the dashboard? A maintenance contract (200-600 EUR/month) covers evolutions, new indicators and support. Your teams stay autonomous on reading and filtering.
How long to train the teams? One or two sessions are usually enough. A good dashboard is designed to be readable without heavy training, with alerts that push information to the user.
Let's scope your project. Tell us your sources (ERP, CRM, accounting), priority indicators and budget: we will define the scope and timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
